Clock5, by Martin Guthrie (also available through FreEPOC), is one of the most feature-packed programs you can get as freeware for the Revo. Not only is it a large clock, it is also a password-protected screensaver, a voice clock, a stopwatch, a world time viewer and a night clock!

The first, and most basic, function is simply to display a large clock of some description. Analog and digital views are available, and most can be seen from a fair distance. You can invert or reverse the digital views.

Psion computers have very secure password protection by standard, but it can be annoying having to enter a password every time you turn the machine on but not enough to ask for a password once per day. You may also want to leave the Revo open and on for a while, but not find that someone else has been looking at private information if you leave it around. This is one problem that Clock5 can overcome, by prompting you for a password after a certain period of inactivity or every time a period of time elapses. It can even temporarily disable the system password whilst Clock5 is running. I've found another use for the password - only allowing people to use your Revo for a certain amount of time before they have to return it for you to unlock it!

Then we move on to the screensaver features. These aren't strictly necessary, as the Revo's LCD screen doesn't suffer from the problem some desktop displays can get where an image can be 'burnt' into the screen if the contents of the screen are left unchanged for a very long time (although we are talking multiple hours here). However, Clock5's Mystify and Logos screensavers work well with Clock5's password protection, or just as a novelty if you like!

The Stopwatch feature is simple, but effective - you get both a graphical and digital view of the time on the stopwatch, which can count down and up and can also be set to a certain time.

One of the features in Clock5 which is, in my opinion, one of the best is the voice clock. When asked, a voice announces the time at the volume you select. The sound files do take up a fair amount of space, but thankfully Clock5 will detect if you have deleted them to save space and will not allow you to run the Voice Time feature. If you want it to, Clock5 will also chime the hours with a rendition of Big Ben in London.

World Time is one feature already present on the Revo, but Clock5 does it better, displaying either two or ten different times.

Clock5 also features a clever night clock. At first you might think that this would be impossible, due to the lack of backlight on the Revo, but it works by either beeping or saying the time to you. This works quite well, provided that there is no-one around who is likely to wake up if you use it!

Clock5 is a product which could easily be sold comercially - it's surprising that it is freeware. Not everyone will need it, but it should certainly appeal to a wide audience, whether for its night clock, password protection, stopwatch or simply clock display value.